Collapsible set up tote carton



Aug. 29, B BEH COLLAPSIBLE SET UP TOTE CARTON 5 Sheets-$heet 1 Filed July 15, 1965 INVENTOR Aug. 29, 1967 B. BEH 3,338,503

COLLAPSIBLE SET UP TOTE CARTON Filed July 15, 1965 3 Sheets-Sheet 2 INVENTOR Bruce Bel? B. BEH

Aug. 29, 1967 COLLAPSI'BLE SET UP TOTE CARTON 5 Sheets-Sheet Filed July 15, 1965 WIIIIIIIIIIIIIIAZ? INVENTOR United States Patent Office Patented Aug. 29, 1967 3,338,503 COLLAPSIBLE SET UP TOTE CARTON Bruce Beh, Huntington, N.Y. Beh Housewares Corp., 1150 Broadway, New York, N.Y. 10001) Filed July 15, 1965, Ser. No. 472,128 9 Claims. (Cl. 229-31) The invention is particularly directed at a set up carton made of corrugated paperboard. The carton is made from a fiat blank suitably die cut, scored and perforated so that when set up it forms a strong, open topped box in which bags of groceries or other bulky articles of irregular shape can be conveniently transported in a vehicle and can be easily carried manually. The carton has a drop front which can be quickly let down for removing the bulky contents of the carton without having to lift them. Simple paper fasteners can be used to secure folded parts of the set up carton together.

It is therefore a principal object of the invention to provide a set up, open top, corrugated, paperboard carton with drop front, assembled from a single die-cut blank.

Another object is to provide a carton as described wherein the drop front is held closed by abutment of folded parts of the front against ends of side walls of the carton so that the drop front can be quickly let down and put up without manipulation of any supplementary fastener members.

A further object is to provide a carton as described wherein removable paper fasteners are used to hold folded parts of the side walls of the carton together to form a rigid set up structure.

Other objects are to provide a set up carton with open top and drop front which is die cut from paperboard with minimum waste, and which is light in weight, inexpensive to manufacture, reusable many times, easily knocked down to flat blank form, quickly set up without use of tools or any particular skill, and usable in stacked array or in end-to-end array.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

FIGURE 1 is a perspective view of a set up carton embodying the invention.

FIG. 2 is a top plan view of the set up carton.

FIG. 3 is a cross sectional view taken on line 33 of FIG. 2. 1

FIG. 4 is a fragmentary vertical sectional view on an enlarged scale taken on line 44 of FIG. 2.

FIG. 5 is a fragmentary horizontal sectional view taken on line 5-5 of FIG. 4.

FIG. 6 is a perspective view of the carton in partially set up condition.

FIG. 7 is a perspective view of the carton in a set up condition but with drop front lowered.

FIG. 8 is a fragmentary, enlarged vertical sectional view taken on line 8--8 of FIG. 7.

FIG. 9 is a fragmentary perspective view of the carton with drop front shown in partially closed position.

- FIG. 10 is a plan view of a die cut blank which is used to set up the carton of FIG. 1.

"FIG. 11 is a perspective view of a fastener member employed in holding the carton in set up condition.

FIG. 12 is a reduced end elevational view of a vertical stacked array of cartons.

FIG. 13 is a reduced front elevational view of a horizontal, end-to-end array of cartons.

FIG. 14 is a fragmentary, enlarged plan view taken on line 1414 of FIG. 13.

Referring first to FIG. 1 there is shown a set up carton 20 embodying the invention. The carton is shown disposed in a shallow, open top, wire frame or rack 22 which can be mounted on the back seat 23 of an automobile 24 for carrying bags 25 of groceries 26. The seat and bags are shown in dotted lines since they form no part of the present invention. The rack 22 is an optionally provided member and is not essential to the invention but may be used to prevent the carton from sliding off the seat 23. The rack 22 has curved downwardly extending hooks 28 at its rear which may be engaged on the seat between the seat and backrest 29.

The carton 20 is set up from a blank 20a symmetri= cal with respect to central line AA shown in FIG. 10 to which reference is now made. The blank 20a has three rectangular panels 30, 31 and 32 all integrally joined together at parallel fold lines L1, L2. A long narrow flap 33 extends outwardly of panel 30 and is joined thereto by fold line L3 parallel to lines L1 and L2. A flap 34 extends outwardly of the long outer edge of panel 32 and is joined thereto by fold line L4. The flap 34 is divided into three very narrow sections 34a, 34b and 340 by two fold lines L5, L6 parallel to line L4. Two rectangular panels 36, 38 extend outwardly of center panel 31 and are integrally joined thereto by fold lines L7, L8. Slots 41, 42 are formed near outer ends of panels 36, 38. Flaps 44, 45 extend outwardly of outer ends of panels 36, 38 and are joined thereto by fold lines L8, L9. The latter flaps are divided in narrower inner sections 47, 48 and wider outer sections 49, 50 by fold lines L10, L11 parallel to the fold lines L8, L9. Holes 52, 53 are formed in outer sections 49, 50 near their ends. Similar holes 54, 55 are formed in panels 36, 38 near fold lines L8, L9 and in alignment with holes 52, 53 transversely of the blank 20a.

Transverse fold lines L7, L8 extend along ends of panels 30-32 and flap 33. At opposite ends of flap 33 are two small tabs 60, 61 connected by fold lines L7, L8. At opposite ends of panel 30 are two generally rectangular panels 62, 64 connected by fold lines L7, L8 to panel 30. The panels 62, 64 are connected to end panels 38, 38 by extensions of fold line L1. The panels 62, 64 are divided into pairs of generally triangular sections 65, 66 and 67, 68 joined together by diagonal fold lines L12, L13. The fold lines L12, L13 terminate at their outer ends in L-shaped slits SL1, SL2 to define rectangular tabs 70, 71 at the outer corner of panel 62 on sections 65, 66, and rectangular tabs 72, 73 at the outer corner of panel 64 on sections 67, 68. Slots 74, 75 are formed in panel sections 65, 66 and similar slots 76, 77 are formed in panel sections 67, 68. Holes 78, 79 are formed in panel sections 65, 66 outwardly of slots 74, 75 and holes 80, 81 are formed in panel sections 67, 68 outwardly of slots 76, 77.

At opposite ends of panel 32 are generally rectangular panels 82, 83 connected by extensions of fold lines L7, L8. Panels 82, 83 are connected to panels 36, 38 by extensions of fold line L2. Panels 82, 83 are divided into generally triangular sections 84, 85 and 86, 87 by diagonal fold lines L14, L15. Sections 84, 87 are actually trapezoidal in shape since rectangular notches 90, 91 are formed at outer corners of the panels 82, 83.

The fold lines L1, L15 may be scored with short slits to facilitate folding or they may be pressed with line dies 0 high speed, mass production machinery. The particular methods used in such manufacture form no part of the present invention and need not be described further. However, it should be noted that very little waste material results when the blank is cut out of rectangular paperboard stock.

FIG. 6 shows blank 20a at a point in the setting up procedure for the carton 20. The panels, fold lines and other features are numbered to correspond identically with the numbers in FIG. 10. To set up the carton, the blank 20a is set in a fiat horizontal position and then panel 30 is folded up to a vertical position on line L1. At the same time panels 62, 63 are folded forwardly on lines L7, L8 and then sections 66 and 68 are folded up on lines L12, L13 to abut inner sections 65, 67 which then form inner portions of the sides of the carton. The sections 66, 68 are then folded against the inner sides of panels 36, 38. The ends of the carton then have triple layers defined by sections 65, 66 and panel 36 at one end and by sections 67, 68 and panel 38 at the other end. This is the position of the ends of the carton shown in FIG. 7.

In FIG. 7 the front of the carton is open with panels 31, 32 horizontal and coplanar with each other and with flap 34. Flap 33 has been folded forwardly and down on line L3 and tabs 60, 61 have been tucked in behind flap sections 49, 50 which have been folded down on lines L8, L9 and L10, L11. The narrow flap sections 47, 48 are horizontal and overlay upper edges of the generally triangular flap sections 65, 66 and 67, 68. The holes 52, 54, 78, 79 shown in FIG. are located at the left end of the carton as viewed in FIG. 7 and are all disposed in registration so that fastener members 95 can be attached.

The structure of a fastener member 95 is best shown in FIG. 11. It has a bifurcated form with two pliable straight flat legs 96 and a head or knob 98 from which the legs extend. The heads of the fasteners are located at the outer side of panel 36 while the legs pass through the holes 52, 54, 78, 79 and abut the exposed face of flap section 49. The fastener members 95a at the right end of the carton are arranged in a similar manner. The heads of the fasteners abut the outer side of panel 38 while the legs of the fasteners pass through registering holes 53, 55, 80, 81 and are then spread out at the exposed side of folded down flap 50. This arrangement places the three slots 41, 74 and 75 in registration at the left end of the carton and slots 42, 76, 77 in registration at the right end of the carton. The engagement of the tabs 60, 61 behind flap sections 49, 50 serves as corner locking means, see FIG. 8. It is possible to insert bulky articles into the carton through the open front or to remove them through the open front of the carton without having to lift them over he upright end or back walls of the carton.

The closure of the open front of the carton to the position of FIGS. 1-5 from the position of FIG. 7 is effected as shown in FIG. 9. The front panel 32 is folded up on line L2 leaving panel 31 in horizontal position to serve as the bottom of the carton. Panels 82 and 83 are folded inwardly on line L2 from upright panels 36, 38. At the same time the panel sections 84, 85 are folded inwardly on diagonal fold line L14, while panel sections 86, 87 are folded inwardly on diagonal fold line L15. This abuts panel sections 85, 87 against the inner side of panel 32 while panel sections 84, 86 are innermost. A very strong reinforced front wall assembly is thus formed. The front wall is reinforced by turning fiap 34 over on line L4 and then turning it down. The outer flap sections 340, 34c are disposed in an innermost downwardly extending position at the inner sides of panel sections 83, 84, see FIG. 4. One end of flap sections 3412, 340 is locked between the inner side of panel section 84 and the vertical end E1 of tab 70. The other end of flap sections 34b, 34c are locked between the inner side of panel section 86 and the vertical end E2 of tabs 72; see FIGS. 4 and 5. It will be noted that in closing the drop front, the fasteners 95 and 95a are not disturbed. Similarly the drop front can be opened by unfolding flap 34 without disturbing the fasteners. The fiap sections 34b,.34c are disposed in coplanar vertical position as shown in FIG. 5. Fold line L6 is necessary to facilitate insertion of the free edge of flap section 340 between the ends of panel sections 84, 86 and the adjacent tab ends E1, E4. Then after the section 34c is inserted, flap section 341; is pushed down to vertical position and the flap 34 assumes the inverted L-shaped position shown in FIG. 5, with flap section 34a horizontal and defining a smooth, covered edge at the top of the front wall of the carton.

The bags 25 can be placed into the carton 20 as shown in FIG. 1 after the carton is fully set up. Removal of the bags can be made without having to lift them up by dropping the front of the carton. This is done by movements which are the reverse of closing the front of the carton as described above. The front wall of the carton is shorter than the back wall since panel 32 is narrower than panel 30. This arrangement is desirable since it facilitates insertion of the back bags 25 into the carton over the lower front wall.

The slots at the ends of the carton serve as convenient hand grips for carrying the filled carton. The entire top edges of the carton at back, front and end walls is smooth and defined by folded down fiaps. This provides a very strong, reinforced edge structure which prevents collapse of the carton when carrying heavy loads. The

low rack 22 does not interfere with dropping the front of the carton as shown in FIG. 7. If desired, the horizontal rectangular frame 22a and bottom bars 22b of this rack can be made of flexible plastic material which yields to permit lowering of the front of the carton to horizontal position.

In FIG. 12 is shown a carton assembly 20A with a pair of cartons 20 stacked in a vertical array one on the other. This arrangement is possible because the bottom carton has a smooth flattened edge at upper ends of the end and side walls. Parts of the cartons are numbered identically to the numbers of corersponding parts of carton 20 shown in FIGS. 1-11.

In FIGS. 13 and 14 is shown a carton assembly 20B in which two cartons 20- and 20 constructed identically to carton 20 are disposed end-to-end. Fastener members are employed to join one carton to the other carton with end panel 38 of one carton abutting panel 36 of the other carton. If the cartons are each designed to hold two grocery bags 25 as shown in FIG. 1, then four bags can be disposed in assembly 20b which will be transported on the seat 23 of the vehicle. More than two cartons can be secured together in this same end-toend arrangement.

The carton 20 described above accomplishes the purposes previously mentioned in an inexpensive, lightweight, durable, easily set up and knocked down, easily stacked and carried corrugated paperboard structure. The carton can be knocked down to the fiat form of blank 20a shown in FIG. 10. If desired, the blank can be folded along transverse fold lines L1, L2 or along lines L7, L8 to form a compact flat three-layer knocked down structure which will occupy small space in storage and shipment.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and that various changes and modifications may be made within the scope of the invention as defined in the appended claims.

What is claimed is:

1. A collapsible set up tote carton having an open top and drop front, comprising a pair of rectangular vertical end panels, a rectangular vertical vback panel, a rectangular bottom panel joined at edges thereof to edges of said back and end panels, a front panel joined at one edge thereof to another edge of said bottom panel, a first two inwardly folded inner panels connected between vertical edges of the side panels and vertical edges of the back panel, each of the inner panels being divided into two generally triangular first sections by a diagonal fold, first flaps on the end panels folded over the inner panels and engageable by fasteners for holding the same abutted to the end panels, and other generally rectangular panels joined at edges thereof to the end panels and to opposite ends of the front panel, said other panels being divided into other generally triangular sections by other diagonal fold lines, whereby said other panels may be disposed in vertical position coplanar with said end panels respectively while said front panel is disposed horizontally and coplanar with said bottom panel, said front panel having a further flap extending outwardly of another edge thereof,

said further flap being foldable into narrow further sections, said first two inner panels having rectangular tabs formed at corners thereof to present forwardly facing straight vertical edges at ends of said generally triangular first sections, whereby said other generally triangular sections can be folded flat against an inner side of said front panel while the front panel is disposed in a vertical position, whereby said further ,flap can be removably engaged between said other triangular sections and said straight edges of the generally triangular first sections for closing the drop front, and whereby said further flap can be disengaged from the first and other triangular sections to release said front panel while said end panels and back panel remain in vertical mutually perpendicular position.

, 2. A collapsible set up tote carton having an open :top and drop front, comprising a .pair of rectangular vertical end panels, a rectangular vertical back panel, a rectangular bottom panel joined at edges thereof to edges of said back and end panels, a front panel joined at one edge thereof to another edge of said bottom panel, a first two inwardly folded inner panels connected between vertical edges of the side panels and vertical edges of the back panel, each of the inner panels being divided into two generally triangular first sections by a diagonal fold, first flaps on the end panels folded over the inner panels, removable fasteners engaging said flaps with said end panels and with the folded first two inner panels to form rigid end wall assemblies disposed perpendicular to the vertical back panel, said other panels being divided into other generally triangular sections by other diagonal fold lines, whereby saidother panels may be disposed in vertical position coplanar with said end panels respectively while said front panel is disposed horizontally and coplanar with said bottom panel, said front panel having a further flap extending outwardly of another edge thereof, said further flap being foldable into narrow further sections, said first two inner panels having rectangular tabs formed at corners thereof to present forwardly facing straight vertical edges at ends of said generally triangular first sections, whereby said other generally triangular sections can be folded flat against an inner side of said front panel While the front panel is disposed in a vertical position, whereby said further flap can be removably engaged between said other triangular sections for closing the drop front, and whereby said further flap can be disengaged from the first and other triangular sections to release said front panel while said end panels and back panel remain in vertical mutually perpendicular position.

3. A collapsible set up tote carton having an open top and drop front, comprising a pair of rectangular vertical end panels, a rectangular vertical back panel, a rectangular bottom panel joined at edges thereof to edges of said back and end panels, a front panel joined at one edge thereof to another edge of said bottom panel, a first two inwardly folded inner panels connected between vertical edges of the side panels and vertical edges of the back panel, each of the inner panels being divided into two generally triangular first sections by a diagonal fold, first flaps on the end panels folded over the inner panels, removable fasteners engaging said flaps with said end panels and with the folded first two inner panels to form rigid end wall assemblies disposed perpendicular to the vertical back panel, said other panels being divided into other generally triangular sections by other diagonal fold lines, whereby said other panels may be disposed in vertical position coplanar with said end panels respectively while said front panel is disposed horizontally and coplanar with said bottom panel, said front panel having a further flap extending outwardly of another edge thereof, said further flap being foldable into narrow further sections, said first two inner panels having rectangular tabs formed at corners thereof to present forwardly facing straight vertical edges at ends of said generally triangular first sections, whereby said other generally triangular sections can be folded fiat against an inner side of said front panel while the front panel is disposed in a vertical position, whereby said further flap can be removably engaged between said other triangular sections for closing the drop front, and whereby said further flap can be disengaged from the first and other triangular sections to release said front panel while said end panels and back panel remain in vertical mutually perpendicular position, said back panel having a narrow flap formed at its free upper edge and foldable down over the panel to provide a reinforced edge structure thereat, said other fiap having generally rectangular tabs at ends thereof engageable between said back panel and one of each two generally triangular first sections to strengthen back corners of the carton.

4. A collapsible set up tote carton having an open top and drop front, comprising a pair of rectangular vertical end panels, a rectangular vertical back panel, a rectangular bottom panel joined at edges thereof to edges of said back and end panels, a front panel joined at one edge thereof to another edge of said bottom panel, a first two inwardly folded inner panels connected between vertical edges of the side panels and vertical edges of the back panel, each of the inner panels being divided into two generally triangular first sections by a diagonal fold, first flaps on the end panels folded over the inner panels and engageable by fasteners for holding the same abutted to the end panels, and other generally rectangular panels joined at edges thereof to the end panels and to opposite ends of the front panel, said other panels being divided into other generally triangular sections by other diagonal fold lines, whereby said other panels may be disposed in vertical position coplanar with said end panels respectively while said front panel is disposed horizontally and coplanar with said bottom panel, said back panel having a narrow other flap formed at its free upper edge and foldable down over the panel to provide areinforced edge structure thereat, said other flap having generally rectangular tabs at ends thereof engageable between .said back panel and one of each two generally triangular first sections to strengthen back corners of the carton, said front panel having a further flap extending outwardly of another edge thereof, said further flap being foldable into narrow further sections, said first two inner panels having rectangular tabs formed at corners thereof to present forwardly facing straight vertical edges at ends of said generally triangular first sections, whereby said other generally triangular sections can be folded fiat against an inner side of said front panel while the front panel is disposed in a vertical position, whereby said further flap can be removably engaged between said other triangular sections and said straight edges of the generally triangular first sections for closing the drop front, and whereby said further flap can be disengaged from the first and other triangular sections to release said front panel while said end panels and back panel remain in vertical mutually perpendicular position.

5. A collapsible set up tote carton having an open top and drop front, comprising a pair of rectangular vertical end panels, a rectangular vertical back panel, a rectangular bottom panel joined at edges thereof to edges of said back and end panels, a front panel joined at one edge thereof to another edge of said bottom panel, a first two inwardly folded inner panels connected between vertical edges of the side panels and vertical edges of the back panel, each of the inner panels being divided into two generally triangular first sections by a diagonal fold, first flaps on the end panels folded over the inner panels and engageable by fasteners for holding the same abutted to the end panels, and other generally rectangular panels joined at edges thereof to the end panels and to opposite ends of the front panel, said other panels being divided into other generally triangular sections by other diagonal fold lines, whereby said other panels may be disposed in vertical position coplanar with said end panels respectively while said front panel is disposed horizontally and coplanar with said bottom panel, said front panel having a further flap extending outwardly of another edge thereof, said further flap being foldable into narrow further sections, said first two inner panels having rectangular tabs formed at corners thereof to present forwardly facing straight vertical edges at ends of said generally triangular first sections, whereby said other generally triangular sections can be folded flat against an inner side of said front panel while the front panel is disposed in a vertical position, whereby said further flap can be removably engaged between said other triangular sections and said straight edges of the generally triangular first sections for closing the drop front, and whereby said further flap can be disengaged from the first and other triangular sections to release said front panel while said end panels and back panel remain in vertical mutually perpendicular position, said end panels and said first two inner panels having registering slots defining hand grips for carrying the carton in set up condition.

6. A blank for making a collapsible set up carton with a drop front, comprising a fiat generally rectangular Corrugated paperboard body having mutually perpendicular fold lines extending across said sheet to define first, second and third contiguous rectangular panels of equal length, fourth and fifth rectangular panels defined at opposite end edges of said second panel, a sixth generally rectangular panel defined between edges of said first and fourth panels, a seventh generally rectangular panel defined between edges of said first and fifth panels, each of said fifth and sixth panels being divided by a diagonal fold line into two generally triangular sections to form with said fourth and fifth panels portions of end walls of said carton, an eighth generally rectangular panel defined between edges of said fourth and third panels, and a ninth generally rectangular panel defined between edges of said third and fifth panels, said eighth and ninth panels each being divided by another diagonal fold line into two generally triangular other sections to form with said third panel portions of a front wall of said carton, said fourth and fifth panels having respectively outwardly extending first and second end flaps foldable over the fourth and fifth panels respectively and over said sixth and seventh panels when in folded condition to keep said end walls of the carton in rigid upright position, one section of each of the sixth and seventh panels having a rectangular corner tab with a straight edge, said third panel having a third flap divided by other fold lines into a plurality of long narrow sections, opposite ends of at least one of said long narrow sections being disposable between the straight edges of corner tabs and folded sections of said eighth and ninth panels to lock said third panel in a vertical position.

7. A blank for making a collapsible set up carton with a drop front, comprising a flat generally rectangular corrugated paperboard body having mutually perpendicular fold lines extending across said sheet to define first, second and third contiguous rectangular panels of equal length, fourth and fifth rectangular panels defined at opposite end edges of said second panel, a sixth generally rectangular panel defined between edges of said first and fourth panels, a seventh generally rectangular panel defined between edges of said first and fifth panels, each of said fifth and sixth panels being divided by a diagonal fold line into two generally triangular sections to form with said fourth and fifth panels portions of end walls of said carton, an eighth generally rectangular panel defined between edges of said fourth and third panels, and a ninth generally rectangular panel defined between edges of said third and fifth panels, said eighth and ninth panels each being divided by another diagonal fold line into two generally triangular other sections to form with said third panel portions of a front wall of said carton, said fourth and fifth panels having respectively outwardly extending first and second end flaps foldable over the fourth and fifth panels respectively and over said sixth and seventh panels when in folded condition to keep said end walls of the carton in rigid upright position, one section of each of the sixth and seventh panels having a rectangular corner tab with a straight edge, said third panel having a third fiap divided by other fold lines into a plurality of long narrow sections, opposing ends of at least one of said long narrow sections being disposable between the straight edges of corner tabs and folded sections of said eighth and ninth panels to lock said third panel in a vertical position, each section of each of the fifth and sixth panels and each of the fourth and fifth panels having long slots of substantially similar shape to serve as hand grips for the carton when edges of the slots are disposed in registration at opposite ends of the set up carton.

8. A blank for making a collapsible set up carton with a drop front, comprising a fiat generally rectangular corrugated paperboard body having mutually perpendicular fold lines extending across said sheet to define first, second and third contiguous rectangular panels of equal length, fourth and fifth rectangular panels defined at opposite end edges of said second panel, a sixth generally rectangular panel defined between edges of said first and fourth panels, a seventh generally rectangular panel defined between edges of said first and fifth panels, each of said fifth and sixth panels being divided by a diagonal fold line into two generally triangular sections to form with said fourth and fifth panels portions of end walls of said carton, an eighth generally rectangular panel defined between edges of said fourth and third panels, and a ninth generally rectangular panel defined between edges of said third and fifth panels, said eighth and ninth panels each being divided by another diagonal fold line into two generally triangular other sections to form with said third panel portions of a front wall of said carton, said fourth and fifth panels having respectively outwardly extending first and second end flaps foldable over the fourth and fifth panels respectively and over said sixth and seventh panels when in folded condition to keep said end walls of the carton in rigid upright position, one section of each of the sixth and seventh panels having a rectangular corner tab with a straight edge, said third panel having a third flap divided by other fold lines into a plurality of long narrow sections, opposing ends of at least one of said long narrow sections being disposable between the straight edges of corner tabs and folded sections of said eighth and ninth panels to lock said third panel in a vertical position, each section of each of the fifth and sixth panels and each of the fourth and fifth panels having long slots of substantially similar shape to serve as hand grips for the carton when edges of the slots are disposed in registration at opposite ends of the set up carton, said fourth, fifth, sixth and seventh panels and said first and second flaps having corner holes to receive fastener members when the holes are disposed in registration to hold the end walls of the carton in stable, rigid upright position per pendicular to said first panel.

9. A blank for making a collapsible setup carton with a drop front, comprising a fiat generally rectangular corrugated paperboard body having mutually perpendicular fold lines extending across said sheet to define first, secsaid carton, an eighth generally rectangular panel defined between edges of said fourth and third panels, and a ninth generally rectangular panel defined between edges of said third and fifth panels, said eighth and ninth panels each being divided by another diagonal fold line into two generally triangular other sections to form with said third panel portions of a front wall of said carton, said fourth and fifth panels having respectively outwardly extending first and second end flaps foldable over the fourth and fifth panels respectively and over said sixth and seventh panels when in folded condition to keep said end walls of the carton in rigid upright position, one section of each of the sixth and seventh panels having a rectangular corner tab with a straight edge, said third panel having a third flap divided by other fold lines into a plurality of long narrow sections, opposing ends of at least one of said long narrow sections being disposable between the straight edges of corner tabs and folded sections of said eighth and ninth panels to lock said third panel in a vertical position, each section of the fifth and sixth panels and each of the fourth and fifth panels having long slots of substantially similar shape to serve as hand grips for the carton When edges of the slots are disposed in registration at 0pposite ends of the set up carton, said fourth, fifth, sixth and seventh panels and said first and second flaps having corner holes to receive fastener members whentthe holes are disposed in registration to hold the end Walls of the carton in stable, rigid upright position perpendicular to said first panel.

References Cited UNITED STATES PATENTS 1,448,138 3/ 1923. List.

1,467,690 9/ 1923 Schwarz 22931 1,690,866 11/1928 Kramer 229-31 X 2,145,993 2/ 1939 Pulsifer 22931 2,151,472 3/ 1939 Hubbard 22931 2,206,304 7/ 1940 Ringler 22931 2,251,627 8/1941 Johnson 22931 2,373,730 4/1945 Williamson et a1. 229-31 X 2,768,776 10/ 1956 Weiss 2293l 3,119,494 l/ 1964 Rosenstiel 229-31 X JOSEPH R. LECLAIR, Primary Examiner.

GEORGE O. RALSTON, Examiner. 

1. A COLLAPSIBLE SET UP TOTE CARTON HAVING AN OPEN TOP AND DROP FRONT, COMPRISING A PAIR OF RECTANGULAR VERTICAL END PANELS, A RECTANGULAR VERTICAL BACK PANEL, A RECTANGULAR BOTTOM PANEL JOINED AT EDGES THEREOF TO EDGES OF SAID BACK AND END PANELS, A FRONT PANEL JOINED AT ONE EDGE THEREOF TO ANOTHER EDGE OF SAID BOTTOM PANEL, A FIRST TWO INWARDLY FOLDED INNER PANELS CONNECTED BETWEEN VERTICAL EDGES OF THE SIDE PANELS AND VERTICAL EDGES OF THE BACK PANEL, EACH OF THE INNER PANELS BEING DIVIDED INTO TWO GENERALLY TRIANGULAR FIRST SECTIONS BY A DIAGONAL FOLD, FIRST FLAPS ON THE END PANELS FOLDED OVER THE INNER PANELS AND ENGAGEABLE BY FASTENERS FOR HOLDING THE SAME ABUTTED TO THE END PANELS, AND OTHER GENERALLY RECTANGULAR PANELS JOINED AT EDGES THEREOF TO THE END PANELS AND TO OPPOSITE ENDS OF THE FRONT PANEL, SAID OTHER PANELS BEING DIVIDED INTO OTHER GENERALLY TRIANGULAR SECTIONS BY OTHER DIAGONAL FOLD LINES, WHEREBY SAID OTHER PANELS MAY BE DISPOSED IN VERTICAL POSITION COPLANAR WITH SAID END PANELS RESPECTIVELY WHILE SAID FRONT PANEL IS DISPOSED HORIZONTALLY AND COPLANAR WITH SAID BOTTOM PANEL, SAID FRONT PANEL HAVING A FURTHER FLAP EXTENDING OUTWARDLY OF ANOTHER EDGE THEREOF, SAID FURTHER FLAP BEING FOLDABLE INTO NARROW FURTHER SECTIONS, SAID FIRST TWO INNER PANELS HAVING RECTANGULAR TABS FORMED AT CORNERS THEREOF TO PRESENT FORWARDLY FACING STRAIGHT VERTICAL EDGES AT ENDS OF SAID GENERALLY TRIANGULAR FIRST SECTIONS, WHEREBY SAID OTHER GENERALLY TRIANGULAR SECTIONS CAN BE FOLDED FLAT AGAINST AN INNER SIDE OF SAID FRONT PANEL WHILE THE FRONT PANEL IS DISPOSED IN A VERTICAL POSITION, WHEREBY SAID FURTHER FLAP CAN BE REMOVABLY ENGAGED BETWEEN SAID OTHER TRIANGULAR SECTIONS AND SAID STRAIGHT EDGES OF THE GENERALLY TRIANGULAR FIRST SECTIONS FOR CLOSING THE DROP FRONT, AND WHEREBY SAID FURTHER FLAP CAN BE DISENGAGED FROM THE FIRST AND OTHER TRIANGULAR SECTIONS TO RELEASE SAID FRONT PANEL WHILE SAID END PANELS AND BACK PANEL REMAIN IN VERTICAL MUTUALLY PERPENDICULAR POSITION. 